Guest Editor: Cuneyt Kayaalp(Gastroenterology Surgery Department, Inonu University Faculty of Medicine, Malatya, Turkey)

Guest Editor: Nitin Sharma (University of Rochester Medical Center, St. James Hospital, Hornell, NY, USA)

Guest Editor: Alessandro Fichera (Division Chief Colorectal Surgery, Department of Surgery Baylor University Medical Center, Dallas, TX, USA)

Guest Editor: Maria S Altieri (Eastern Carolina University, Greenville, NC, USA)

Guest Editors: Philipp Lingohr and Jonas Dohmen (Department of Surgery, University of Bonn, Bonn, Germany)

This special series on “Minimally Invasive Surgery and Gastric Cancer: Where Are We Now?” was co-edited by Dr. Stefano Rausei, from ASST Valle Olona, Gallarate, Varese, Italy; Dr. Simone Giacopuzzi, from University of Verona, Verona, Italy.

This special series on “The Pelvic Floor and Anorectal Disorders” is edited by Dr. Lucia Oliveira, Dr. Steven D. Wexner and Dr. Sarah A. Vogler. This Special Series aims to discuss the main anorectal disorders of the pelvic floor.

Guest Editors: Steven G. Leeds (Baylor University Medical Center, Dallas, TX, USA) and Lee L. Swanström (IHU-Strasbourg, 1 Place de l'Hôpital, Strasbourg, France)

Guest Editor: M Mahir OZMEN (Istinye University, Medical School, Department of Surgery, Istanbul, Turkey)

Guest Editors: Steven D. Schwaitzberg and Rafael Perez (Department of Surgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA)

Guest Editor: Corrado Pedrazzani (Department of Surgery and Oncology, Unit of General and Hepatobiliary Surgery, Verona University Hospital Trust, Verona, Italy)

Guest Editors: Satish K. Warrier and Alexander G. Heriot (Peter MacCallum Cancer Centre, Alfred Health, Epworth Healthcare, Richmond, Victoria, Australia)

Guest Editors: Marco Milone (University of Naples Federico II, Naples, Italy) and Ugo Elmore (Department of Surgery, San Raffaele Scientific Institute, Vita Salute University, Milan, Italy)

Guest Editors: Giovanni Battista Levi Sandri and Massimo Carlini (Department of Surgery, Sant'Eugenio Hospital, Rome, Italy)

The "Meet the Professor" series features interviews with the global Key Opinion Leaders, providing a window into the new developments, breakthroughs, and achievements in the interviewees’ professional fields, both clinically and academically.

Guest Editors: Roberto Bergamaschi (New York Medical College, Westchester Medical Center, New York, NY, USA) and Mahir Gachabayov (Vladimir City Clinical Hospital of Emergency Medicine, Vladimir, Russia)

Guest Editors: Muhammed Ashraf Memon (University of Queensland, Brisbane, Queensland, Australia) and Abe Fingerhut (Medical University of Graz, Graz, Austria)

Guest Editors: Jeffrey M. Marks and Ryan M. Juza (Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, USA)

Guest Editors: Davide Lomanto (Minimally Invasive Surgical Centre, National University Health System, Singapore, Singapore) and Anil Sharma (Max Institute of Minimal Access, Metabolic and Bariatric Surgery, Max Healthcare Hospital, Saket, New Delhi, India)

Guest Editors: Michael J Stamos and Mehraneh Dorna Jafari (Department of Surgery, University of California Irvine, Irvine, CA, USA)

Guest Editors: Kenneth K. Y. Wong and Patrick Ho Yu Chung (Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China)

Guest Editors: Chung Yip Chan (Singapore General Hospital, Duke - NUS Medical School Singapore, Singapore), Ser Yee Lee (Singapore General Hospital, Duke - NUS Medical School Singapore, Singapore) and Adrian Kah Heng Chiow (Department of Surgery, Changi General Hospital, Singapore)

Guest Editors: Eduardo Ma Targarona and Andrea Balla (General and Digestive Surgery Unit, Hospital de la Santa Creu i Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain)

Guest Editors: Davide Lomanto (Minimally Invasive Center, Yong Loo Lin School of Medicine, National University Hospital, Singapore) and Anil Sharma (Max Institute of Minimal Access, Metabolic & Bariatric Surgery, Max Healthcare, Saket, New Delhi, India)

Guest Editor: Marco Milone (Department of Public Health, “Federico II” University of Naples, Naples, Italy)

Guest Editor: Giovanni Battista Levi Sandri (Division of General Surgery and Liver Transplantation S. Camillo Hospital, Rome, Lazio, Italy)

Guest Editor: Fernando A. M. Herbella (Department of Surgery, Escola Paulista de Medicina, Federal University of Sao Paulo, Sao Paulo, Brazil)

Guest Editor: Wei-Jei Lee (Department of Surgery, Min-Sheng General Hospital, National Taiwan University, Taiwan)

Guest Editor: Chikara Kunisaki (Department of Surgery, Gastroenterological Center, Yokohama City University, Yokohama, Japan)